Modified quantum delayed-choice experiment without quantum control
Abstract
Wheeler's delayed-choice experiment delays the decision to observe either the wave or particle behavior of a photon until after it has entered the interferometer, and the quantum delayed-choice experiment provides the possibility of observing the wave and particle behavior simultaneously by introducing quantum control device. We here propose a modified quantum delayed-choice experiment without quantum control or entanglement assistance, in which a photon can be prepared in a wave-particle superposition state and the morphing behavior of wave-to-particle transition can be observed easily. It is demonstrated that the presented scheme can allow us to rule out classical hidden variable models in a device-independent manner via violating dimension witness. We also extend the scheme to the situation of two degrees of freedom, first constructing a hybrid quantum delayed-choice experiment which enables simultaneous observation of a photon's wave and particle behaviors in different degrees of freedom, and then proposing a scheme to prepare the single-photon wave-particle entanglement. This study is not only meaningful to explore the wave and particle properties of photons, but also provides potential for the research of the single-particle nonlocality from the perspective of the wave-particle degree of freedom.
Cite
@article{arxiv.2102.11562,
title = {Modified quantum delayed-choice experiment without quantum control},
author = {Qi Guo and Wen-Jie Zhang and Gang Li and Tiancai Zhang and Hong-Fu Wang and Shou Zhang},
journal= {arXiv preprint arXiv:2102.11562},
year = {2021}
}
Comments
17 pages, 5 figures